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A: Voltages varies on a circuit because current varies caused by difference in resistance
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∙ 13y ago
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What is true about the sum of the voltages across the components in a circuit compared to the voltage of the cell?
voltage is devided only in series circuit and is the same at the parallel circuit
What 2 voltages is a short circuit made of?
Circuits are not made of voltages, they are made of loops. A short circuit exists when a connection is added that is not supposed to be part of the intended circuit as designed. This added connection produces extra loops in the circuit that typically prevent current from reaching parts of the circuit where it is needed and can cause excessive current to flow in other parts of the circuit, resulting in damage to the components in the circuit.
Can the total of the voltage drop across the loads of a series circuit ever exceed the total of the source voltages applied to that circuit?
no
When a 10mA forward bias current and the voltages at the anode and cathode of a diode in a circuit are found to be the same what is the diode most likely to be?
With a 10mA forward bias current, if the voltages at the anode and cathode of a diode in a circuit are found to be the same, then the diode most likely to be shorted.
The electric force that makes current flow in a circuit is related to the what?
The electric force that makes current flow in a circuit is related to the resistance.
How are parallel circuit and series circuit the same?
They are not. They are connected differently, and the voltages and currents behave in different ways.
What is true about the sum of the voltages across the components in a circuit compared to the voltage of the cell?
voltage is devided only in series circuit and is the same at the parallel circuit
What 2 voltages is a short circuit made of?
Circuits are not made of voltages, they are made of loops. A short circuit exists when a connection is added that is not supposed to be part of the intended circuit as designed. This added connection produces extra loops in the circuit that typically prevent current from reaching parts of the circuit where it is needed and can cause excessive current to flow in other parts of the circuit, resulting in damage to the components in the circuit.
What happens to the voltages across the light bulbs in a parallel circuit change as more light bulbs are added to the circuit?
nothing
Can you terminate a 110 circuit and a 220 circuit in one box?
No, do not put terminate 2 different voltages in one box.
Can the total of the voltage drop across the loads of a series circuit ever exceed the total of the source voltages applied to that circuit?
no
How do you solve AC circuits problems?
Use of complex numbers for circuit values (e.g. voltages, currents, reactances) is required to get correct answers for AC. The equations are the same as for DC circuits, but the numbers are complex not real. Also reactances vary with the frequency of the AC signals in the circuit.
Why you use resisters in your circuit?
To adjust/control/set voltages and/or restrict current.
What is the algebraic sum of the voltages round a loop in a circuit?
Use Kirchoff's law.
How can a transister can amplify the voltages?
When it's assembled into a circuit with other components and a power supply, atransistor can be used to amplify changes in voltage, but it can't amplify voltages.
Why must resistance never be measured in an active circuit?
First of all, in an active circuit, there are voltages flowing through various nodes. If you try to measure the resistor, those voltages will cause error in your meter, or may damage your meter. Second of all, even if you cut the power, any loop in the circuit around the resistor will affect the measured impedance. Unless you are certain that only the resistor will see the current introduced by the meter, you must take the resistor out of circuit to measure it.
What do you do if voltages are not correct on a circuit card for a camera?
Technically, you consult the circuit card's schematic diagram, identify the failed component using the data you collect by measuring voltages at several points on the card, and you replace the failed component. In the real world of 2009, you put away your voltmeter and replace the circuit card.
